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Abstract #0497

Standardized Phantom for Consistent Brain Imaging Protocols for a Low-Field MRI (48mT) System in LMICs

Patricia Tusiime1, Ronald Amodoi 2, Mayinja Bob Williams 2, Robert Asiimwe2, Mary Anthony Nassejje2, Loprimo Robin Lemi 2, and Obungoloch Johnes 2
1Biomedical Engineering, Mbarara University of Science and Technology, MBARARA, Uganda, 2Mbarara University of Science and technology, MBARARA, Uganda

Synopsis

Keywords: Low-Field MRI, Phantoms, T2 mapping

Motivation: High, dual & low-field MRI system phantoms, are expensive($5,000 - $20,000), complex to produce, maintenance-intensive, &prone to magnetic field inhomogeneities, restricting their usability and imaging applications in LMICs.

Goal(s): To design a standardized low-cost phantom that accurately mimics T2 brain relaxation properties for Low-Field MRI system calibration.

Approach: Solutions mimicking white matter, gray matter and CSF, were packaged in soda-lime bottles positioned in the isocenter of the scanner using 3D printed holders. Employed MSE sequence to enable T2 relaxation mapping of the solutions.

Results: Experimental values show 94% accuracy for white matter, 95.7% for gray matter, 80% for CSF compared to established brain values

Impact: The developed phantom enhances accessibility and improves calibration consistency reducing lengthy scan preparation times. It promotes local resource utilization & collaborative research initiatives to advance healthcare technology in LMICS.

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